Cradle for log-rafts.



Patented Mar. 2, 1915.

WITNESSES INVENTOR ATTORNEY no s'rn'rns PATENT ornicn.

PATRICK F. DUND'ON, OF SAN FRANCISCO, CALIFORNIA.

CRADLE FOR LOG-RAFTS.

Specification of Letters Patent.

Patented Mar. 2, 1915.

Application filed September 28, 1912. Serial No. 722,931.

In the accompanying drawing, Figure 1 is a plan view of my improved lograft; Fig. 2 is an end view on an enlarged scale, part being brokenaway; Fig. 3 is a vertical section of a bulk head.

Referring to the drawing, 1 indicates a bulkhead comprising verticalmembers 2, spaced apart at suitable intervals, and horizontal members 3,spaced apart at much shorter intervals, and secured to said verticalmembers. Two of these bulkheads, respectively at the front and rear ofthe cradle, are connected together by longitudinal cables 1, the ends ofwhich are secured 'to swivel eyes 6, in which are held bolts 7,

a plurality of which pass through each vertical member 2 and betweenhorizontal members 3 and then through nuts :8 bearing against plates 9,which bear against the outer sides of said vertical members. The logs,shown at 11, extend longitudinally between said bulkheads, which aresufficiently far apart to contain between them from five to ten logs inlongitudinal series, the num-- ber of logs in series varying greatlybecause of the great differences in length of the several logs whichform the raft.

Each side of the cradle is formed of a longitudinal series of abouteight pairs of logs 12, and of beams 13 secured upon said logs 12, theadjacent ends of the beams 13 and of the logs 12 being connected in suchseries by short cables 14.

Encompassing the logs at suitable intervals are cables 16, herein shownas chains, which pass, on each side of the cradle, between the beams 13and also between the logs 12 on that side. One end of each chain isattached to a sheave 17 and the other end passes around said sheave. Thechain is then drawn tight by any suitable means, and its latter end isthen hooked to an adj acent portion of the chain by a hook 18. Adjacentto the chains are posts 19, extending upwardly between a pair of thelongitudinally extending logs 12 and the corresponding beams 13, and thelogs 12 being mortised as shown at 20 to receive said posts. Each post19 is connected to a corresponding post directly opposite on the otherside of the cradle by three cables 21, 22, 25 passing through the raftof logs, the cable 21 being attached to collars 23 around the lower endsof the posts, and the cables 22, 25 to collars 24:, 26 respectivelyaround the posts at a short distance above the beams 13 and near theupper ends of the posts. By providing bulk-heads at the end of thecradle, and tying said bulk-heads together by longitudinal chains, thelogs are effectually prevented from escaping endwise from the cradle,and the employment of chains encompassing the logs at suitable intervalsprevents the lateral escape of the logs from the cradle, especially whenthese chains are drawn very tightly around the logs.

In the claims I use the word cables as a generic term including hempenor wire ropes, chains, or the like.

I claim 1. In a cradle for logs, means for preventing the lateral escapeof the logs from the cradle comprising, on each side of the cradle, apair of longitudinal logs secured together, and a post between the logs,a cable connecting the lower ends of opposite posts, a cable connectingopposite posts a short distance above said beams, and a cable around thelogs of the cradle and between the longitudinal logs on each side of thecradle.

2. In a cradle for logs, means for preventing the lateral escape of thelogs from the cradle comprising, on each side of the cradle, a pair oflongitudinal logs secured together, and a post between the logs, thelogs being mortised to receive said posts, a cable connecting the lowerends of opposite posts, a cable connecting opposite posts a shortdistance above said beams, and a cable around the logs of the cradle andbetween the longitudinal logs on each side of the cradle.

3. In a cradle for logs, means for preventing the lateral escape of thelogs from the cradle comprising, on each side of the cradle, alongitudinal series of pairs of loncradle a longitudinal series of pairsof lon-' gitudinal logs secured together, cables con- 7 necting theseveral pairs of the series, and

posts between the logs, the logs being inortised to receive said posts,cables connecting 15 opposite posts above below said logs,

and cables around the logs of the cradle,

and passing between the longitudinal logs on each side of the cradle. I

In testimony whereof I have hereunto set 20 my hand in the presence oftwo subscribing Copies of this patent may be obtained for five centseach, by addressing the Commissioner of Patents,

- Washington, D. G.

